Pipe-clamp.



J. LEVEY.

PIPE CLAMP.

APPLICATION FIL'BD MAR. 7, 1914 1,114,273. Patented 0013.20, 1914.

2 SHEETS-SHEET 2.

07272 lav/ 2 on Fig. 1 and viewed in the direction of UNITED STATES"PAQTENTV OFFICE.

JOHN LEVEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL MACHINE WORKS, 0F

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PIPE-CLAMP. 7

Specification of Letters Patent.

Application filed March 7, 1914. Serial No. 823,131.

. ment in Pipe-Clamps, of which the following is a specification.

My invention relates to clamping means for rendering the joints betweenpipes water and gas-tight, which are usually employed as supplemental tothe usual joint-packing,

for preventing leakage should this packing become impaired, my inventionhaving been devised more particularly for use in connection with pipeshaving bell and spigot joints.

My object is to provide a novel,,-.sim'ple and inexpensive form of clampwhich may be readily'applied to a pipe and. which will operate to insurethe maintenance of a tight joint.

Referring to the accompanying drawings Figure 1 is a broken view invertical elevation of two'pipes having a bell and spigot connection andequipped with my improved clamp, this section being taken at the line 1on Fig. 2 and viewed in the direction of the arrow. Fig. 2 is a sectiontaken at the line the arrow. Fig. 3 is a face view of aport'ion of thepacking-engaging ring of my im-r proved clamp. Figs. 4 and 5 aresections taken at the lines 4 and 5, respectively, on Fig. 3 and viewedin the direction of the arrows. 6 is a plan view of the structure shownm Fig. 3. Fig. 7is a face view of the clamping means of Fig. 1 showingportions thereof in section; and Fig.8, a section taken at the line 8 onFig. 7 and viewed win the direction of the arrow- My invention is shownas applied to a joint between two pipes 10 and 11 of the belljointedtype, the pipe 11 having aebellsection 12 into which the spigot section13 of the pipe 10 extends and is spaced therefrom throughout itsperiphery to afford a chan ber 14 between the bell and spigot, which inpractice is packed with any suitable packing, usually with hemp,illustrated at 15, up. to the line 16, and lead 17 flush'with the outersurface 18 of the bell 12, the lead being poured into the chamber 14;upon the packing 15, while in molten condition.

While the pipes 10and 11 maintain their alinement, the packing justdescribed is suflicient to maintain the joint between them in.water-tight and gas-tight condition. Should these pipes, however,becon1e out of alinement, the lead packing which is inelasticpermanently deforms causing the joint to leak, and it is torepair jointswhich have thus beatentea oct. 20, 1914.

come leaky that I provide my improved clamp, which maybe applied to thejoint when the pipes are installed or applied thereto after leakageoccurs, as desired.

.My improved clamping device comprises a ring 19 preferably formed. inhalves as illustrated, the dividing line of theseparts being representedat 20, this ring being adapted to loosely encircle the spigot 13; a I

circular series ofbolt rods 21, which oppose both the bell and spigotends of the pipes, these rods paralleling the pipes, the opposed ends ofthese rods being deflected, as represented at 22 and 23, to engage attheir deflected portions 22 with the reduced end 24 of the bell 12, andto extend at their deflected portions 23, which are threaded asrepresented at 25, into the spaces 26 provided between the spaced .webs27 formed onthe ring 19 at intervals about its periphery, in theconstruction shown eight of these pairs of lugs being provided; and ringdevices 28 and 29, the ring 28 fitting in recesses 30 in the outer sidesof the bars 21 for preventing the latter from being pulled off thebell-end 24 of the pipe, and the ring 29 encircling the end ofthe ring19 and the threaded ends 25 of the bars' 21 for preventing the bars 21from tilting upwardly at their threaded.

ends .when the nuts 31 thereon are screwed tightly into position, ashereinafter described.

The ring 19 cooperates with packing 32 of hemp, or any other suitablepacking material, which is applied about the spigot end of the pipebetween the end wall 18 of the bell and the face 33 ofthe ring 19, thisface being preferably slightly inset, as represented at 34, the. purposeof the clamp being to crowdthe packing 32 about the spigotll, so

that any leakage of gas past the packing 15 and 17 will be arrested. v

' The bars 21 are preferably" formed of straight bars of steel, or thelike, bent into the form illustrated, the recessed portions 30 beingpreferably formed by shaping these endsdof the bars to present hooks, asillustrate H The ring 19 is of general L-shape in crosssection asillustrated, affording a circular flange 35 between which and the face18 of the bell the packing 32 is confined as hereinbefore stated, and anannular flange 36 extending lengthwise of the spigot 10, this flangebeing preferably relatively thin and the bars 21 being preferably ofsuch shape 7 that they will extend at their outer threaded ends 25closely adjacent to the flange 36 and thus substantially in line withthe packing 32, the threaded ends of these rods preferably carryinwashers 37 which bear against the ends of t e lugs 27 when the nuts 31are screwed up tightly.

able construction. In the construction shown, they are each formed oftwo sections '38 and 39, each of saidtsections being formed at one endinto a hook 40 and having its other end shouldered, as represented at41.

,The shouldered ends of the sections 38 and 39 are adapted to extendthrough openings 42 in blocks 43 and engage with shoulders .44 on thelatter.

The pipe clamp may be applied to' the pipe jointin the followingmanner:,The ring 19 is positioned on the spigot 13, as shown, with thepacking 32 encircling the ,spigot and located in the space between thebell and this ring. The bars 21 are then applied to the joint in theposition'shown in the drawings, and the bands 28 and 29 applied to thebars 21, the operator in applying these bands first hooking together attheir hooked :ends 40 the'sections forming the bands," and thereuponapplying the bands to the hooked ends of the bars 21 and the threadedends thereof, respectively; .ap-

plying to the shouldered ends 41 of the band sections 38 and 39, theblocks 43, to the position shown in Fig. 7, wherein the shoulders 41oppose the shoulders +14. Bolts 45 are then inserted through theopenings 42 in the opposed blocks 43 and tightened thereon to 'draw thesections of-the bandsinto rigid engagement with the ends of the bars 21.The operator then screws up the nuts 31 to a clamp the ring 19 with thedesired pressure The bands 28 and 29 may be of any suit for maintaininga tight joint, is reduced to the minimum.

llhile I have illustrated and described a particular constructionembodying my invention, I do not wish to be understood as intending tolimit it to the construction illustrated, as the same may be variouslymodified and altered without departing from the spirit of my invention.

lVhat I'claim as new and desire to secure by Letters Patent is- 1. Thecombination with pipes connected together by a bell and spigot joint, ofa member on said spigot-portion, packing between sa-id bell-portion andsaid member, bars extenuing lengthwise of said joint, bands engagingsaid bars at opposite ends of the latter and clampin them about saidbell and spigot portions, the band about the I ends of said barsoverlying the spigot portion, surrounding said member, and meansengaging said-bars and member for forcing said'memher toward saldbell-portion and against said packing.

2..l'he combination with pipes connected together by a bell and spigotjoint, of a member on said spigot-portion, packing be tween saidbell-portion and said member, Lars extending-- lengthwise of said joint,bands engaging said bars at opposite ends and clamping them about saidbell and spigot portions, the band about the ends of said bars overlyingthe spigot portion, surrounding said member, the ends of'said barsadjacent to said spigot being threaded, and

nuts screwed upon the threaded onus of said bars and bearing againstsaid member, for

the purpose set forth.

The combination with pipes connected together by a bell and spigotjoint, a ringmember on said sp1got-port1on, packing interposed betweensaid member and said bellportion, bars having deflected threaded endsand hook-shaped ends lying adjacent, respectively, to said spigot andbell-portions,

bands engaging said bars at their hook-pop lions and their other ends,respectively, for clamping said bars about said bell andspigot-portitms, and nuts screwing upon the threaded ends of said barsand against the said member on said spigot-portioln for forcing saidlast referred to member toward said hell-portion and against saidpacking.

JOHN LEVEY.

ln presence of Nannie B. Dn-unaum, A. C. FISCHER.

